The influence of BaO content on the optical properties such as energy gap, refractive index, optical basicity, molar and oxide ion polarizability, molar refraction and third order nonlinear susceptibility have been studied theoretically in [0.7 TeO2 (0.3-x) B2O3 x BaO] (x =0, 0.1, 0.2, 0.3 mole%) and analyzed the parameters related to these compositions with theoretical predictions. The mass attenuation coefficients of glass system have been calculated at different energies. The theoretical results indicate that a decrease of the mass attenuation coefficient with increasing of gamma-ray energies and that glass in the present study may be developed as radiation shielding material and new nonlinear optical materials.